Portable lamp



(No Model.)

L. BAUMEISTER.

' y PORTAZl-E LAMP.' No. 888.882. ff' 7888811888 Mar. 18, 1884.

`others skilled in the art to which it appertains UNTTnn STnTns PATENT Trice.

LEOPOLD BAUMEISTER, OF BRIDGEPOR-T, CONNECTICUT.'

PORTA BLE LANI P.

SPECIFICATION forming part of Letters Patent No. 295,332, dated March 18, 1884.

Application led July 9,1883. (No model.)

To @ZZ whom t may concer/z l Be it known that I, LnoPoLD BAUMEIsTEn., a-citizen of the Grand Duchyof Baden, Germany, residing atBridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Portable Lamps; and I do hereby declare the following to be a full, clear, and exact description ot' the invention, such as will enable to make and use the same.

My invention relates to certain novel and useful improvements in lamps, but more especially to that class of lamps designed to be portable, and has for its objects, first, to provide an air-passage where communication with the outer air shall be at the bottom of the lamp. and whose construction shall be such as will not permit the oil or other fluid to escape or drip; second, to so construct the reservoir and cap and arrange the wiel; that the position in which the lamp is held shall not affect the flow; third, to provide a wick which shall absorb the oil or other fluid in such a manner that there is no possibility of an overlow at the top, while at the same time that port-ion of the wiel; exposed to the darne is of such a nature that it will not be consumed; fourth, to provide a suitable support for the wick, in order that the latter may have body to it, so as not to sag;n and become limp; and with these ends in View my invention consists in certain details of construction and combination of elements, hereinafter fully and in detail explained, and then specifically designated by the claims.

In order that those skilled in the art to which my invention appertains may fully understand its construction and operation, I will proceed to describe the same in detail, referring by letter to the accompanying drawings, forming a part of this speci tlcation, in which- Figure l is a central vertical section of my improvement, with a device attached thereto for faste-ning the lamp to various objects, as barrels, bins, dac.; Fig. 2, a det-ail venlarged view of the central tube, and Fig. 3 aview showing my improvement in a completed condition. l

Similar letters of reference denote like parts in the several figures of the drawings.

Ais the outer casing, surmounted at the top' between the cap and the ilange F on the burner,

and serves to make a tight joint.

G is a central projection extending upward from the bottom of the casing` within the reservoir. This projection is threaded externally to accommodate a tube, H, having an interior thread atits lower end. Around this tube is the wick I, of any material which will readily absorb the oilor fluid. The upper part ofthe wick is composed of a material different from the lower part. I use in this connection asbestus and silk, the strands of which meet the strands of the lower portion of the wick, as seen at J. I have found by actual experiment that a wick made-'entirely ofasbestus, or of asbestus and silk, does not produce the best results, because the oil is not readily absorbed thereby. "Wit-h a wick of any material that will absorb duid I combine a sill; and asbestos tip, and not only bring about the most satisfactory results, but I do not find it necessary to renew the wick.

The casing A is extended below the bottom G, as shown at K, and threaded interior] y for the purpose presently explained.

L is a cap, having an annular recess, M, and threaded exteriorl y, so as to be readily screwed within the extension K. rIlhe arrangement of this cap within the casing` is such that an airchamber is left between the bottom, C, and the cap. Into this chamber extends a tube, N, open at both ends. The top of said tube extends within a recess, O, in the cap B in such a manner that there is a free passage between the tube and recess. The cap L ha's a central interior thread, in order that any suitable standard, I?, may be secured thereto.

Q is a groove or channel cut out at the side of the screw R and continued down through the standard. This groove communicates with the air-chamber formed by the cap L and the bottom C, and, as the tube N passes into said chamber, it will be readily understood that a IOO direct communication With the outside air is formed, the air coming in through the groove Q, to the air-chamber, up through the tube N, and down between said tube and the Wall of the recess O into the reservoir S.

I have shown the Wick arranged around a tube; but a solid rod would 'answer the purpose `inst as Well, as the object is to afford a support for thewick, so that it can be removed from or putrback in the reservoir,.and also because the shape is better preserved. If a tube is used, I provide a small hole, T, near the. bottom thereof, so that the Huid may rise and fall in the tube.

At the top of the burner is a regulator, U, Which moves up and down on a thread, and serves to increase or diminish the flame and light, and this is especially advantageous for night use.

The cap B may be cast with the casing,and

l the grooves Q may be more i'n number, or any opening communicating with the air-passage, and the external air maybe substituted therefor Without departing from the spirit of my invention.

I am enabled to adapt my improvement to Various nses-as, for instance, in a cane or a policemans club, or a lantern-top may be readily fitted over the burner-but most especially is my invention adapted as a brewers lamp, for which purpose I secure around the outer side of the casing a collar having spike projections YV, by means of which the lamp may be fastened at the side of a barrel, or in a beam, &c., or any other suitable mechanism for attaching the lamp may be employed.

Having thus described my invention, What I claim as new, and desireto secure by Letters Patent, is-

l. In a lamp, the casing having at its top a cap recessed as described, and at the bottom a projection, in combination with the tube N, cap L, recessed and having communication with the outside air, and tube H, substantially as set forth.

-2. The casing A, having cap B and bottom C, with recess O and projection G, respectively, in combination With the tube N, cap L, with annular recess M, grooves Q, tube H, wick I, burner D, and means for regulating the llame, substantially as set forth and described.

In testimony whereof I alix my signature in presence of two Witnesses.

LEOPOLD BAUMEISTER.

Witnesses:

F. NV. SMITH, Jr., S. S. WILLIAMsoN. 

